File: cxx1z-constexpr-if.cpp

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 995,836 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (34 lines) | stat: -rw-r--r-- 666 bytes parent folder | download | duplicates (18) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
// RUN: %clang_cc1 -std=c++1z %s -emit-llvm -o - | FileCheck %s --implicit-check-not=should_not_be_used

void should_be_used_1();
void should_be_used_2();
void should_be_used_3();
void should_not_be_used();

struct A {
  constexpr explicit operator bool() const {
    return true;
  }
};

void f() {
  if constexpr (false)
    should_not_be_used();
  else
    should_be_used_1();

  if constexpr (true || ({ label: false; }))
    should_be_used_2();
  else {
    goto foo;
foo: should_not_be_used();
  }
  if constexpr (A())
    should_be_used_3();
  else
    should_not_be_used();
}

// CHECK: should_be_used_1
// CHECK: should_be_used_2
// CHECK: should_be_used_3